* {
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style: none;
}

/* 左边导航栏 */
.feature {
    position: fixed;
    left: 0;
    top: 0;
    width: 250px;
    height: 100%;
    background-color: rgb(34, 45, 47);
}

.feature p {
    width: 250px;
    height: 60px;
    text-align: center;
    line-height: 60px;
    background-color: #027B72;
}

.avatar {
    width: 250px;
    height: 125px;
    /* background-color: aqua; */
}

/* 管理员头像 */
.avatar img {
    position: relative;
    margin-top: 15px;
    margin-left: 15px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background-color: yellow;
    cursor: pointer;
}

.administrator-detail {
    position: relative;
    top: -75px;
    left: 110px;
    display: flex;
    flex-direction: column;
    width: 140px;
    height: 60px;
    line-height: 30px;
}

.administrator-detail a {
    margin-left: 10px;
    color: #fff;
}

.administrator-detail a:nth-child(1) {
    font-size: 20px;
}

/* 在线图标 */
.icon-yuandian {
    vertical-align: middle;
    font-size: 20px;
    color: rgb(57, 181, 115);
}

/* 功能大框 */
.menu-list {
    margin-top: 15px;
    height: 100%;
    font-size: 25px;
    background-color: rgb(34, 45, 47);
}

.menu-list ul li {
    line-height: 60px;
    margin-left: 52px;
    /* text-align: center; */
    color: #fff;
}

.menu-list ul li:hover>a {
    color: rgb(2, 123, 114);
}

.menu-list ul li a {
    display: block;
    width: 100%;
    height: 60px;
    color: #fff;
    text-decoration: none;
    /* background-color: #007fc8; */
}

.menu-list ul li.first-menu.active>a {
    color: rgb(171, 216, 213);
    vertical-align: middle;
}

.menu-list ul li.first-menu.active ul li.second-menu.current a {
    /* background-color: rgba(195, 224, 223, 0.4); */
    /* text-align: center; */
    font-size: 18px;
}

.menu-list ul li.first-menu ul li.second-menu a {
    font-size: 19px;
}


/* 导航-图标 */
.common {
    font-size: 20px;
    margin-right: 8px;

}

/* 右边内容 */
.right-nav {
    /* position: relative;
    /* top: -500px; */
    position: relative;
    left: 250px;
    /* left: 250px; */
    width: 1236px;
    /* height: 753px; */
    height: 100%;
    /* background-color: rgb(194, 211, 160); */
}

/* 顶部导航  */
.information {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: flex-end;
    width: 100%;
    height: 60px;
    line-height: 60px;
    vertical-align: middle;
    font-size: 18px;
    z-index: 1;
    background-color: #009788;
}

.information a {
    display: block;
    text-align: center;
    width: 90px;
    height: 60px;
    color: #fff;
}

.information a:nth-child(1) {
    width: 110px;
    height: 140px;
}



.information a:hover {
    background-color: #1c8276;
}

/* 下拉菜单 */
.icon-jiantouxia {
    margin-left: 6px;
}

.icon-shezhi1 {
    /* margin-left: 25px; */
    /* margin-right: 15px; */
    font-size: 18px;
}

/* 超级用户下拉菜单 */
.list {
    max-height: 0px;
    transition: max-height 0.25s ease-out;
    overflow: hidden;
    /* background: #d5d5d5; */
}

.information-user:hover .list {
    max-height: 140px;
    transition: max-height 0.25s ease-in;
}

/* 中间部分 */
.center {
    /* position: relative; */
    margin-left: 25px;
    margin-top: 25px;
    width: 1180px;
    /* height: 650px; */
    height: 100%;
    background-color: #fff;
    box-shadow: 5px 0 5px rgba(23, 23, 23, .3);
}

/* 顶部信息 */
.center .title p {
    width: 100%;
    height: 55px;
    font-size: 17px;
    line-height: 55px;
    margin-left: 10px;
    border-bottom: 1px solid rgba(176, 173, 173, .3);
    /* background-color: #009788; */
    /* 禁止用户点击 */
    user-select: none;
}

/* 图书馆里图标 */
.icon-ziliaoku-shuji {
    font-size: 23px;
    vertical-align: middle;
    margin-left: 15px;
    margin-right: 5px;
    /* background-color: rgb(4, 132, 64); */

}

/* 隐藏id */
.displayid {
    display: none;
}

.importants {
    width: 1150px;
    height: 100%;
    /* background-color: #2d9618; */
}

/* 表格 */
.displayid {
    display: none;
}

table {
    margin-top: 25px;
    margin-left: 15px;
    width: 100%;
    border-collapse: collapse;
}

table td,
table th {

    border: 1px solid rgba(153, 156, 156, .3);
    text-align: center;
    padding: 7px 0;
}

/* tr偶数颜色 */
.realitic-content:nth-child(odd) {
    background-color: rgba(13, 148, 134, .1);
    cursor: pointer;
}

.realitic-content:nth-child(even) {
    background-color: rgba(42, 153, 142, 0.3);
    cursor: pointer;
}


.realitic-content:hover {
    background-color: rgba(19, 126, 115, 0.5);
}

/* 操作 */
.functional-borrow .sames {
    display: inline-block;
    width: 45px;
    height: 25px;
    border: 0;
    background-color: rgba(194, 211, 160, .2);
    margin-left: 15px;
    font-weight: 700;
    color: #05688f;
    font-size: 15px;
    cursor: pointer;
}

/* 删除-遮盖层 */
.container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

/* 主要的弹框 */
.dump {
    position: relative;
    top: 30%;
    left: 45%;
    width: 350px;
    height: 200px;
    text-align: center;
    line-height: 100px;
    background-color: rgb(31, 91, 91);
    border-radius: 5px;
}

.dump p {
    font-size: 19px;
    user-select: none;
}

.dump-common {
    width: 80px;
    height: 40px;
    margin-left: 25px;
    border: 0;
    outline: none;
    box-shadow: 0 2px 5px rgb(58, 57, 57);
    font-size: 15px;
    cursor: pointer;
}

/* 确认按钮 */
.decision {
    border-radius: 5px;
    background-color: rgba(243, 67, 67, 0.5);
}

.decision:hover {
    background-color: rgba(222, 12, 12, 0.7);
}

/* 取消按钮 */
.vanish {
    border-radius: 5px;
    margin-left: 70px;
    background-color: rgb(144, 141, 141);
}

.vanish:hover {
    background-color: rgb(166, 161, 161);
}

/* 删除成功弹框 */
.success-tip {
    display: none;
    position: absolute;
    top: 7px;
    left: 35%;
    width: 280px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: rgb(5, 172, 5);
    background-color: rgb(214, 246, 198);
    border-radius: 5px;
    font-size: 17px;
    z-index: 1;
}

/* 删除失败弹框 */
.failure-tip {
    display: none;
    position: absolute;
    top: 7px;
    left: 35%;
    width: 280px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: rgb(220, 11, 11);
    background-color: rgb(210, 211, 209);
    border-radius: 5px;
    user-select: none;
    font-size: 17px;
    z-index: 1;
}

/* 退出登录-遮盖层 */
.container-log {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2;
}

.leave {
    position: relative;
    top: 30%;
    left: 45%;
    width: 350px;
    height: 200px;
    text-align: center;
    line-height: 100px;
    background-color: rgb(31, 91, 91);
    border-radius: 5px;
}

.leave p {
    font-size: 19px;
    user-select: none;
}

.certain {
    width: 65px;
    height: 40px;
    border-radius: 5px;
    background-color: rgba(3, 89, 158, 0.5);
    cursor: pointer;
}

.certain:hover {
    background-color: rgba(2, 103, 185, 0.5);
}

.cancel {
    width: 65px;
    height: 40px;
    border-radius: 5px;
    margin-left: 70px;
    background-color: rgb(144, 141, 141);
    cursor: pointer;
}

.cancel:hover {
    background-color: rgb(167, 164, 164);
}

/*设置 a 标签的css样式*/
.page-normal a {
    border: 1px solid #027B72;
    padding: 5px 7px;
    color: #009788;
    margin-left: 20px;
    /*设置标签 a 之间的间隔*/
    text-decoration: none;
    /*去除页码数字下面的下划线*/
    cursor: pointer;
}

/*设置鼠标经过时 a 标签的css样式*/
.page-normal a:hover {
    background-color: rgba(3, 146, 103, .3);
}

/*设置整个div的css样式,该样式主要用于设置网页内的省略号 …… 的样式，并且同时设置内容居中显示*/
.page-normal {
    position: relative;
    top: 20px;
    left: -26px;
    width: 100%;
    height: 55px;
    text-align: right;
}

/*设置当前页面的css样式*/
.page-normal .page-current {
    color: #ffffff;
    background-color: rgba(3, 146, 103, .8);
}

/*设置左单括号 < 的css样式*/
.page-normal .page-prev {
    color: #009788;
}

/*进行代码优化，将不同css样式中共有的属性放在一起，有助于提高运行效率*/
.page-normal a,
.page-normal a:hover,
.page-normal .page-prev,
.page-normal .page-current {
    border: 1px solid #009788;
    padding: 5px 7px;
}

.proceeding {
    width: 221px;
    /*height: 45px;*/
    /*background-color: red;*/
    text-align: center;
    line-height: 45px;
    position: relative;
    left: 955px;
    /*top: 25px;*/

}

/*搜索框*/
.reserach {
    width: 100%;
    height: 57px;
    width: 100%;
    height: 57px;
    margin-top: 15px;
    margin-left: 15px;
}

.research-text {
    outline: none;
    width: 184px;
    height: 32px;
    font-size: 16px;
    outline-style: none;
    background-color: rgba(0, 0, 0, 0);
    border: 1px solid rgb(156, 154, 154);
    cursor: pointer;
}

/* 焦点 */
.research-text:focus {
    outline: 0;
    -webkit-box-shadow: inset 0 1px 1px rgba(155, 134, 127, .5), 0 0 8px rgba(155, 134, 127, .5);
    box-shadow: inset 0 1px 1px rgba(155, 134, 127, .15), 0 0 8px rgba(155, 134, 127, .25);
}

.research-submit {
    width: 60px;
    height: 43px;
    border: none;
    cursor: pointer;
    border-radius: 2px;
    font-size: 17px;
    margin-left: 15px;
}

.research-submit:hover {
    color:#348f50;
}